Rennart on my e90 First shop I took mine to installed the whole system up to the muffler saying it wouldn't fit.
Second shop I took it to said the same thing so I contacted the seller and he told me to flip the mufflers and switch sides. Seemed counter intuitive but wouldn't you know.... It worked. Still had a small alignment issue but was very minor and a little bend took care of it.
I would take it to a true muffler shop and try again.
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